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CURL-CVE-2016-9953

Published Dec 21, 2016·Last modified May 19, 2026
Affected Components(0)

No affected components available

Description

curl's TLS server certificate checks are flawed on Windows CE.

This vulnerability occurs in the verify certificate function when comparing a wildcard certificate name (as returned by the Windows API function CertGetNameString() to the hostname used to make the connection to the server.

The pattern matching logic exhibits an out of bounds read. If the wildcard certificate name field is longer than the connection hostname, the wildcard comparison code performs an access out of bounds of the connection hostname heap based buffer. This issue could technically leak the contents of memory immediately preceding the connection hostname buffer, a crash or at worst happen to match against another piece of data.

Risk Scores
Base Score
0.0

Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.

Threat Intelligence
0.0

No exploitation activity has been observed at this time. Continue routine monitoring.

EPSS
1.83%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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